Improvement in gluing-hoppers



coma fits-ire JAMES Wf. cAMPBE LnoF NEW YORK, N; Y.

Letters Patent No; 109,494, dated November 22, 1870.

IMPROVEMENT IN GLUlNG-HOPPERS.

The Schedule referred to ln-tliese Letters Patent and making part, of the lame.

Figure 2, a'transverse section of the same; and

Figure 3, a transverse section of a tongue-audgroove molding forming portion of apicture-frame,

in illustration of one description of work to which my improvement-is applicable.

My invention has reference to gluing-hoppers for uniting tougucd-audgrooved work, including pictureii'aiues and moldings, formed of strips or pieces fitting by a tongue, the one within or along the other.

As in other hoppers for such purposes, the object of the invention is to effect a uniform and proper distribution of the glue over the surface or surfaces to be coated with it, before inserting the tongue in 'the groove of the joint, and to this cud I use a distributing-hopper, made capable of being slid and guided over .the groove, for evenly smearing with glue the sides and top surfaces or upper margins of the groove within and against which the tongucd portion of the work isdesigned to fit.

In my improved hopper, however, 1 ani enabled to dispense with all obstruct-ion or projectionfrom its bottom, such as a guide-strip and regulator, to fit and travel within the groove, and do away with an open.

construction of the bottom of the hopper throughout 'its length, which efl'ects a prolonged and unequal distribution, and use instead a hopper having a close bottom with perforations in it, arranged to distribute the glue from fixed or isolated points down the sides of the groove and over the top surfaces or margins of it,

freet'rom any interference of a regulating-strip within the groove.

Referring to the accompanying drawing- A and 13 represent two moldings or strips used in the formation of a picture-flame, the one stripA being made with a tongue, (0, and the other strip, B,

with a groove, 1), to secure the fitof the strips togethe'r by gluing them, and for which purpose 1!; 1s desirable,thatthcro should neither be a too thiunor yet too profuse distribution of the glue, but that the same should be evenly distributed over the sides of the groove and top or outer surfaces 0 e of the strip B, along cit-her edge of the groove, free from lodgnieut of the glue in the bottom, so that on fitting the tongued strip A to its place it will form a close and evenly glued joint with the grooved portion B.

To this end I'coustruct the hopper 0, into which. the liquid glue is put, with a close bottom, and of a proper form'to secure its being guided, when slid over the strip B, in a straight line or course with -the groove 7), and which may be effected by outside guides or strips (Z (I, made to lit the molding out-side of the groove.

In the bottom ot'said trough or hopper, at suit-able distances apart to insure escape of the glueonto the surfaces; e and sides of the groove 1!, I- insert apertures c f ot'a size to correspond with the width of the surfaces 0 'c', and which apertures are so disposed that thcynot only lie over the surfaces 0 0, but also slightly overlap the edges of the groove, so that glue in escaping from them will notonly smear or coat the surfaces 0 0, but also the-sides of the groove.

A hopper thus constructed 'will,.ou being slid over the groove of the tonguc-aiuhgroove joint, effect a most perfect aud even distribution of the glue throughout the length of the joint.

Of course the sizes and listauceof the apertures e and f apart will depend upon the width of the groove.

and of the marginal surfaces-i: c. 4

I do not cl 'lu a hopper with an open bottom and guide-strip running-in the groove, as in patent No. 9l,4l-4;'b utw What here-claimed. and desired to be secured by Letters Batent, i sj A gluing-hopper, constructed with small apertures (rand f in its bottom, near one cud, arranged to distribute t-hc glue on the flatsurfaces of the molding,

and slightly to overh-apg the groove, substantially as shown and described.

J. W. CAMPBELL.

Witnesses:

FRED. HAYNES, s lt. IE. RABuAu. 

